On Fri, Jan 16, 2015 at 03:34:30PM +0000, Ramana Radhakrishnan wrote:
> On Fri, Jan 16, 2015 at 3:06 PM, James Greenhalgh
> <james.greenha...@arm.com> wrote:
> > On Fri, Jan 16, 2015 at 10:20:40AM +0000, Marcus Shawcroft wrote:
> >> On 15 January 2015 at 09:50, James Greenhalgh <james.greenha...@arm.com>
> >> wrote:
> >>
> >> > 2015-01-15 James Greenhalgh <james.greenha...@arm.com>
> >> >
> >> > * config/arm/cortex-a57.md: New.
> >> > * config/aarch64/aarch64.md: Include it.
> >> > * config/aarch64/aarch64-cores.def (cortex-a57): Tune for it.
> >> > * config/aarch64/aarch64-tune.md: Regenerate.
> >>
> >> This is low risk and only affects aarch64 backend. I think we should
> >> take this for gcc 5, so OK.
> >
> > Thanks Marcus,
> >
> > I committed this as revision 219724, but I made a mistake in applying
> > the patch and we ended up with two copies of the model in the same
> > file.
> >
> > I've committed the attached as revision 219746 as the obvious
> > fixup to my mistake.
> >
> > This should resolve the build failure that doko was seeing.
>
> Can you also spin up a changes.html patch for the ARM / AArch64 ports
> while you are at it ?
Of course, how does the below look to you?
OK after the Cortex-A57 scheduling description goes in to the ARM port?
Thanks,
James
---
Index: htdocs/gcc-5/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-5/changes.html,v
retrieving revision 1.65
diff -u -r1.65 changes.html
--- htdocs/gcc-5/changes.html 14 Jan 2015 11:59:44 -0000 1.65
+++ htdocs/gcc-5/changes.html 16 Jan 2015 16:10:10 -0000
@@ -439,6 +439,12 @@
<h3 id="aarch64">AArch64</h3>
<ul>
+ <li>Code generation for the ARM Cortex-A57 processor has been improved.
+ A more accurate instruction scheduling model for the processor is
+ now used, and a number of compiler tuning parameters have been set
+ to offer increased performance when compiling with
+ <code>-mcpu=cortex-a57</code> or <code>-mtune=cortex-a57</code>.
+ </li>
<li> A workaround for the ARM Cortex-A53 erratum 835769 has been
added and can be enabled by giving the
<code>-mfix-cortex-a53-835769</code> option.
@@ -471,6 +477,12 @@
configure option with either of <code>--with-tune</code> or
<code>--with-arch</code>.
</li>
+ <li>Code generation for the ARM Cortex-A57 processor has been improved.
+ A more accurate instruction scheduling model for the processor is
+ now used, and a number of compiler tuning parameters have been set
+ to offer increased performance when compiling with
+ <code>-mcpu=cortex-a57</code> or <code>-mtune=cortex-a57</code>.
+ </li>
<li> Support for the Cortex-A17 processor has been added through the
<code>-mcpu=cortex-a17</code> and <code>-mtune=cortex-a17</code> options.
</li>
